When Glitch Interpreter enters the battlefield, it triggers, causing you to return it from the battlefield to your hand and causing you to manifest dread.
Activate Ashnod's Altar by sacrificing the manifested card, adding ({C} magic symbol) ({C} magic symbol) .
When the creature dies, Pitiless Plunderer triggers, creating a Treasure token.
Activate the Treasure by tapping and sacrificing it, adding ({U} magic symbol) .